Statement Of Cash Flows
| Concept | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2023-03-31 | 
|---|---|---|---|---|---|
| Statement of cash flows | |||||
| Statement of cash flows | |||||
| Cash flows from operating activities | |||||
| Subtotal | — | 
                                                32,232,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                25,673,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Interest and dividends received | — | 
                                                1,412,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,150,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Interest paid | — | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Income taxes paid | — | 
                                                -6,409,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -10,602,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) operating activities | — | 
                                                27,163,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,284,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash flows from operating activities | |||||
| Cash flows from operating activities | |||||
| Cash flows from investing activities | |||||
| Proceeds from sale of securities | — | 
                                                19,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Purchase of property, plant and equipment | — | 
                                                -703,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -181,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) investing activities | — | 
                                                -5,541,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -4,542,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Purchase of investment securities | — | 
                                                -175,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -300,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Proceeds from sale of investment securities | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                317,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Loan advances | — | 
                                                -11,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,036,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Proceeds from collection of loans receivable | — | 
                                                3,013,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,058,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Other, net | — | 
                                                27,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -107,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash flows from facilities maintenance and investing activities | |||||
| Cash flows from financing activities | |||||
| Purchase of treasury shares | — | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Dividends paid | — | 
                                                -6,392,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -6,393,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) financing activities | — | 
                                                -6,440,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -6,410,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Other, net | — | 
                                                -47,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -45,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net increase (decrease) in cash and cash equivalents | — | 
                                                14,679,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,217,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Effect of exchange rate change on cash and cash equivalents | — | 
                                                -501,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,885,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash and cash equivalents | 
                                                66,782,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                52,102,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                44,885,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |